Putting it all together – a remote file browser

In this section, we use our knowledge about different concurrency frameworks to build a remote file browser. This larger application example illustrates how different concurrency libraries work together, and how to apply them to different situations. We will name our remote file browser ScalaFTP.

The ScalaFTP browser is divided into two main components: the server and the client process. The server process will run on the machine whose filesystem we want to manipulate. The client will run on our own computer, and comprise of a graphical user interface used to navigate the remote filesystem. To keep things simple, the protocol that the client and the server will use to communicate will not really be FTP, but a custom communication protocol. By choosing the correct concurrency libraries to implement different parts of ScalaFTP, we will ensure that the complete ScalaFTP implementation fits inside just 500 lines of code.

Specifically, the ScalaFTP...